Chrysene
- Formula: C18H12
- Molecular weight: 228.2879
- IUPAC Standard InChIKey: WDECIBYCCFPHNR-UHFFFAOYSA-N
- CAS Registry Number: 218-01-9
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Benzo[a]phenanthrene; 1,2-Benzophenanthrene; 1,2-Benzphenanthrene; Benz(a)phenanthrene; 1,2,5,6-Dibenzonaphthalene; Rcra waste number U050; Crysene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
IR Spectrum
Go To: Top, UV/Visible spectrum, Gas Chromatography, References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
UV/Visible spectrum
Go To: Top, IR Spectrum, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Source | Badger, Jamieson, et al., 1965 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 7488 |
Instrument | n.i.g. |
Melting point | 258.2 |
Boiling point | 448 |
Gas Chromatography
Go To: Top, IR Spectrum, UV/Visible spectrum, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | CP Sil 5 CB | 240. | 2406. | Hanai and Hong, 1989 | 30. m/0.25 mm/0.25 μm |
Capillary | SE-30 | 240. | 2429. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 240. | 2438. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 240. | 2439. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 240. | 2447. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 260. | 2480. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 260. | 2486. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 260. | 2488. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 260. | 2491. | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-52 | 240. | 2461.9 | Pozhidaev, Berezkin, et al., 1988 | He; Column length: 17.5 m; Column diameter: 0.21 mm |
Capillary | SE-30 | 220. | 2408. | Korhonen and Lind, 1985 | N2; Column length: 25. m; Column diameter: 0.33 mm |
Capillary | SE-30 | 240. | 2456. | Korhonen and Lind, 1985 | N2; Column length: 25. m; Column diameter: 0.33 mm |
Packed | OV-101 | 250. | 2489. | Rudenko, Bulychova, et al., 1984 | N2; Column length: 3. m |
Capillary | OV-101 | 270. | 2490. | Grimmer and Böhnke, 1972 | N2; Column length: 50. m; Column diameter: 0.50 mm |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 2472.3 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2471.8 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 40. C @ 5. min, 4. K/min; Tend: 310. C |
Capillary | DB-5 | 2434.2 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 2. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2472.3 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2494.9 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 6. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | OV-1 | 2474.4 | Zhang, Shen, et al., 2000 | 25. m/0.2 mm/0.33 μm, 5. K/min; Tstart: 100. C; Tend: 180. C |
Capillary | Ultra-1 | 2442.66 | Richmond and Pombo-Villar, 1997 | 25. m/0.32 mm/0.52 μm, 15. K/min, 320. C @ 10. min; Tstart: 35. C |
Capillary | OV-1 | 2442.5 | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | DB-5 | 2434.2 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 2. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2472.3 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2494.9 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 6. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2412.3 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 2471.8 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 40. C @ 5. min, 4. K/min; Tend: 310. C |
Capillary | SE-30 | 2463.1 | Pozhidaev, Berezkin, et al., 1988 | He, 2. K/min; Column length: 17.5 m; Column diameter: 0.21 mm; Tstart: 100. C; Tend: 280. C |
Capillary | SE-52 | 2432.2 | Pozhidaev, Berezkin, et al., 1988 | He, 2. K/min; Column length: 17.5 m; Column diameter: 0.21 mm; Tstart: 100. C; Tend: 280. C |
Capillary | SE-30 | 2465. | Korhonen and Lind, 1985 | N2, 10. K/min; Column length: 25. m; Column diameter: 0.33 mm; Tstart: 100. C; Tend: 320. C |
Capillary | SE-30 | 2454. | Korhonen and Lind, 1985 | N2, 6. K/min; Column length: 25. m; Column diameter: 0.33 mm; Tstart: 140. C; Tend: 320. C |
Capillary | SE-52 | 2400. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 33.3 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2400. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2400. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2400. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2400. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2413. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2413. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2413. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2413. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2422. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2422. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2424. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2431. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2434. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2437. | Beernaert, 1979 | He, 50. C @ 5. min, 6. K/min; Column length: 16.6 m; Column diameter: 0.50 mm; Tend: 320. C |
Capillary | SE-52 | 2397. | Cantuti, Cartoni, et al., 1965 | N2, 2.5 K/min; Column length: 50. m; Tstart: 100. C; Tend: 300. C |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-1 | 2409.82 | Dimitriou-Christidis, Harris, et al., 2003 | 30. m/0.25 mm/0.25 μm; Program: 60C => 7C/min => 225C => 15C/min => 300C(11.43min) |
Capillary | HP-5 | 2471.68 | Dimitriou-Christidis, Harris, et al., 2003 | 30. m/0.25 mm/0.25 μm; Program: 60C => 7C/min => 225C => 15C/min => 300C(11.43min) |
Capillary | DB-5 | 2486. | Havenga and Rohwer, 1999 | 30. m/0.25 mm/0.25 μm, He; Program: 60 0C 7 0C/min -> 130 0C 5 0C/min -> 200 0C 6 0C/min -> 260 0C 20 0C/min -> 320 0C (4 min) |
Capillary | OV-101 | 2443. | Yasuhara, Shiraishi, et al., 1997 | 15. m/0.25 mm/0.25 μm, He; Program: 50C(2min) => (20C/min) => 120C => (7C/min) => 310C(10min) |
Capillary | 5 % Phenyl methyl siloxane | 2441. | Yasuhara, Shiraishi, et al., 1997 | 25. m/0.31 mm/0.52 μm, He; Program: 50C(2min) => (20C/min) => 120C => (7C/min) => 310C(10min) |
Capillary | Methyl Silicone | 2401. | Oda, Ichikawa, et al., 1996 | Program: 50C (2min) => 20C/min => 160C => 5C/min => 210C => 10C/min => 300C |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 | 2450. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2451. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2457. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2458. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2462. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2463. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2491. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | HP-5 | 2492. | Miao and Wu, 1999 | 30. m/0.32 mm/0.25 μm, 50. C @ 2. min, 5. K/min; Tend: 310. C |
Capillary | Ultra-1 | 2428. | Elizalde-González, Hutfliess, et al., 1996 | 50. m/0.2 mm/0.33 μm, H2, 3. K/min, 300. C @ 35. min; Tstart: 60. C |
Capillary | DB-5 | 2453. | Quilliam, Lant, et al., 1985 | 30. m/0.32 mm/0.1 μm, He, 10. K/min; Tstart: 60. C; Tend: 290. C |
Capillary | DB-5 | 2456. | Quilliam, Lant, et al., 1985 | 30. m/0.32 mm/0.1 μm, He, 10. K/min; Tstart: 60. C; Tend: 290. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 2411. | Oda, Yasuhara, et al., 1998 | 25. m/0.25 mm/0.25 μm, He; Program: 50 0C (2 min) 20 0C/min -> 160 0C 5 0C/min -> 210 0C 10 0C/min -> 300 0C |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 2465. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
References
Go To: Top, IR Spectrum, UV/Visible spectrum, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Badger, Jamieson, et al., 1965
Badger, G.M.; Jamieson, N.C.; Lewis, G.E.,
Photochemical reactions of azo compounds. IV. Further photochemical cyclodehydrogenations,
Aust. J. Chem., 1965, 18, 190-198. [all data]
Hanai and Hong, 1989
Hanai, T.; Hong, C.,
Structure-retention correlation in CGC,
J. Hi. Res. Chromatogr., 1989, 12, 5, 327-332, https://doi.org/10.1002/jhrc.1240120517
. [all data]
Pozhidaev, Berezkin, et al., 1988
Pozhidaev, V.M.; Berezkin, V.G.; Korolev, A.A.; Popova, T.P.; Pozhidaeva, K.A.,
Retention indices of polycyclic aromatic hydrocarbons on quartz capillary columns with chemically immobilized stationary phases,
Zh. Anal. Khim., 1988, 43, 1082-1088. [all data]
Korhonen and Lind, 1985
Korhonen, I.O.O.; Lind, M.A.,
Gas-liquid chromatographic analyses. XXXIV. Separation and retention indices with retention increments of some nitrated polynuclear aromatic hydrocarbons on a low-polarity (SE-30) capillary column,
J. Chromatogr., 1985, 322, 71-81, https://doi.org/10.1016/S0021-9673(01)97660-5
. [all data]
Rudenko, Bulychova, et al., 1984
Rudenko, B.A.; Bulychova, Z.Yu.; Topunov, V.N.; Itsikson, L.B.,
Regularities in changes of retention indices for polycyclic aromatic hydrocarbons depending on their structure and polarity of stationary phase,
Zh. Anal. Khim., 1984, 39, 4, 700-706. [all data]
Grimmer and Böhnke, 1972
Grimmer, G.; Böhnke, H.,
Bestimmung des Gesamtgehaltes aller polycyclischen aromatischen Kohlenwasserstoffe in Luftstaub und Kraftfahrzeugabgas mit der Capillar-Gas-Chromatographie,
Z. Anal. Chem., 1972, 261, 4-5, 310-314, https://doi.org/10.1007/BF00786987
. [all data]
Song, Lai, et al., 2003
Song, C.; Lai, W.-C.; Madhusudan Reddy, K.; Wei, B.,
Chapter 7. Temperature-programmed retention indices for GC and GC-MS of hydrocarbon fuels and simulated distillation GC of heavy oils
in Analytical advances for hydrocarbon research, Hsu,C.S., ed(s)., Kluwer Academic/Plenum Publishers, New York, 2003, 147-193. [all data]
Zhang, Shen, et al., 2000
Zhang, M.-J.; Shen, S.-D.; Chen, S.-Y.; Sun, Y.-H.,
Analysis of heavy oil fractions in high-temperature coal tar by capillary gas chromatography/fourier transform infrared spectrometry,
Chin. J. Chromatogr., 2000, 18, 3, 241-246. [all data]
Richmond and Pombo-Villar, 1997
Richmond, R.; Pombo-Villar, E.,
Short communication. Gas chromatography-mass spectrometry coupled with pseudo-Sadtler retention indices, for the identification of components in the essential oil of Curcuma longa L.,
J. Chromatogr. A, 1997, 760, 2, 303-308, https://doi.org/10.1016/S0021-9673(96)00802-3
. [all data]
Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P.,
Use of incremental models to estimate the retention indexes of aromatic compounds,
Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946
. [all data]
Lai and Song, 1995
Lai, W.-C.; Song, C.,
Temperature-programmed retention indices for g.c. and g.c.-m.s. analysis of coal- and petroleum-derived liquid fuels,
Fuel, 1995, 74, 10, 1436-1451, https://doi.org/10.1016/0016-2361(95)00108-H
. [all data]
Beernaert, 1979
Beernaert, H.,
Gas Chromatographic Analysis of Polyclylic Aromatic Hydrocarbons,
J. Chromatogr., 1979, 173, 1, 109-118, https://doi.org/10.1016/S0021-9673(01)80450-7
. [all data]
Cantuti, Cartoni, et al., 1965
Cantuti, V.; Cartoni, G.P.; Liberti, A.; Torri, A.G.,
Improved evaluation of polynuclear hydrocarbons in atmospheric dust by gas chromatography,
J. Chromatogr., 1965, 17, 60-65, https://doi.org/10.1016/S0021-9673(00)99836-4
. [all data]
Dimitriou-Christidis, Harris, et al., 2003
Dimitriou-Christidis, P.; Harris, B.C.; McDonald, T.J.; Reese, E.; Autenrieth, R.L.,
Estimation of selected physicochemical properties for methylated naphthalene compounds,
Chemosphere, 2003, 52, 5, 869-881, https://doi.org/10.1016/S0045-6535(03)00288-1
. [all data]
Havenga and Rohwer, 1999
Havenga, W.J.; Rohwer, E.R.,
Chemical Characterization and Screening of Hydrocarbon Pollution in Industrial Soils by Headspace Solid-Phase Microextraction,
J. Chromatogr., 1999, 848, 1-2, 279-295, https://doi.org/10.1016/S0021-9673(99)00522-1
. [all data]
Yasuhara, Shiraishi, et al., 1997
Yasuhara, A.; Shiraishi, H.; Nishikawa, M.; Yamamoto, T.; Uehiro, T.; Nakasugi, O.; Okumura, T.; Kenmotsu, K.; Fukui, H.; Nagase, M.; Ono, Y.; Kawagoshi, Y.; Baba, K.; Noma, Y.,
Determination of organic components in leachates from hazardous waste disposal sites in Japan by gas chromatography-mass spectrometry,
J. Chromatogr. A, 1997, 774, 1-2, 321-332, https://doi.org/10.1016/S0021-9673(97)00078-2
. [all data]
Oda, Ichikawa, et al., 1996
Oda, J.; Ichikawa, S.; Mori, T.,
Analysis of polycyclic aromatic hydrocarbons in airborne particulates by capillary GC/MS method with programmed temperature relative retention index,
Bunseki Kagaku, 1996, 45, 9, 825-835, https://doi.org/10.2116/bunsekikagaku.45.825
. [all data]
Miao and Wu, 1999
Miao, X.; Wu, F.,
Study on retention behaviors of polycyclic aromatic hydrocarbons by gas chromatography in different operation models,
J. Instrumental Anal., 1999, 15, 4, 288-292. [all data]
Elizalde-González, Hutfliess, et al., 1996
Elizalde-González, M.P.; Hutfliess, M.; Hedden, K.,
Retention index system, adsorption characteristics, and sructure correlations of polycyclic aromatic hydrocarbons in fuels,
J. Hi. Res. Chromatogr., 1996, 19, 6, 345-352, https://doi.org/10.1002/jhrc.1240190608
. [all data]
Quilliam, Lant, et al., 1985
Quilliam, M.A.; Lant, M.S.; Kaiser-Farrell, C.; McCalla, D.R.; Sheldrake, C.P.; Kerr, A.A.; Lockington, J.N.; Gibson, E.S.,
Identification of polycyclic aromatic compounds in of poly-mutagenic emissions from steel casting,
Biomed. Mass Spectrom., 1985, 12, 4, 143-150, https://doi.org/10.1002/bms.1200120402
. [all data]
Oda, Yasuhara, et al., 1998
Oda, J.; Yasuhara, A.; Matsunaga, K.; Saito, Y.,
Identification of polycyclic aromatic hydrocarbons of the particulate accumulated in the tunnel duct of freeway and generation of their oxygenated derivatives,
Jpn. J. Toxicol. Environ. Health, 1998, 44, 5, 334-351, https://doi.org/10.1248/jhs1956.44.334
. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Notes
Go To: Top, IR Spectrum, UV/Visible spectrum, Gas Chromatography, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.